On Friday, the FIM Court of Appeals will rule on the legality of Ducati's controversial rear winglet. And, whatever is decided, relations between MotoGP's manufacturers will be strained, writes Oriol Puigdemont.

Aprilia Racing CEO Massimo Rivola says the Italian marque was informed by MotoGP officials in February that running a winglet in front of the rear wheel, as Ducati did in the Qatar Grand Prix, would be illegal.